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WO2001065661A1 - Unite de production de courant constituee d'un generateur et d'un moteur a combustion interne a piston alternatif servant de systeme de commande - Google Patents

Unite de production de courant constituee d'un generateur et d'un moteur a combustion interne a piston alternatif servant de systeme de commande Download PDF

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Publication number
WO2001065661A1
WO2001065661A1 PCT/EP2001/002367 EP0102367W WO0165661A1 WO 2001065661 A1 WO2001065661 A1 WO 2001065661A1 EP 0102367 W EP0102367 W EP 0102367W WO 0165661 A1 WO0165661 A1 WO 0165661A1
Authority
WO
WIPO (PCT)
Prior art keywords
power generator
generator unit
unit according
magnetic elements
rotor
Prior art date
Application number
PCT/EP2001/002367
Other languages
German (de)
English (en)
Inventor
Ernst Hatz
Franz Moser
Original Assignee
Motorenfabrik Hatz Gmbh & Co. Kg
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Motorenfabrik Hatz Gmbh & Co. Kg filed Critical Motorenfabrik Hatz Gmbh & Co. Kg
Priority to EP01915313A priority Critical patent/EP1173917B1/fr
Priority to JP2001564438A priority patent/JP2003526310A/ja
Priority to DE50109853T priority patent/DE50109853D1/de
Priority to US09/937,535 priority patent/US6710494B2/en
Priority to AU42444/01A priority patent/AU779625B2/en
Publication of WO2001065661A1 publication Critical patent/WO2001065661A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
    • H02K7/1807—Rotary generators
    • H02K7/1815—Rotary generators structurally associated with reciprocating piston engines
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
    • H02K21/22—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating around the armatures, e.g. flywheel magnetos
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
    • H02K7/1807—Rotary generators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
    • H02K21/22—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating around the armatures, e.g. flywheel magnetos
    • H02K21/222—Flywheel magnetos

Definitions

  • Power generator unit consisting of generator and reciprocating piston engine as drive
  • the invention relates to a power generator unit comprising a generator and a reciprocating piston internal combustion engine as a drive, in particular a synchronous generator and diesel engine, with permanent magnets arranged in the rotor of the generator to excite it in the region of the poles and an armature winding in the stator.
  • Permanently excited electrical machines usually have permanent magnets that are made of one piece each pole.
  • each permanent magnet is in the form of a cylinder jacket segment, which adjoins the air gap formed with the stator in the region of the poles.
  • Permanent magnetic shells of this type can hardly be produced economically, if need be no longer in a size that is suitable for generators with an output of more than five kVA.
  • the assembly of such one-piece permanent magnets is only possible in the unmagnetized state, because of the high magnetic forces that preclude normal handling. The magnetization must then be carried out laboriously on the completely assembled rotor. When transporting large permanent magnets, there is also a risk of breakage due to their brittle material properties.
  • the present invention is based on the object of finding an economical solution for the loading to create the rotor of the generator in a generator unit mentioned at the beginning with permanent magnets for the purpose of magnetic excitation of the generator, in particular to avoid the aforementioned disadvantages.
  • the permanent magnets are formed by a plurality of relatively small magnetic elements, on the one hand their economical manufacture is made possible. These are not only easy to transport and to assemble in a magnetized form, but are also easy to assemble. For this purpose, they are individually arranged next to one another in the circumferential direction in suitable receiving pockets of the rotor with the same polar orientation. The latter are, seen in the axial direction, open on one or both sides, so that they can be equipped with magnetic elements from one or both end faces of the rotor.
  • receiving pockets that are continuously open in the axial direction enable the magnetic elements in the receiving pockets to be arranged in the axial direction in at least two rows.
  • CD d * - ⁇ . ⁇ ⁇ - f-1 ⁇ d CD ⁇ > • tr 1 ⁇ N n * SU X h- ⁇ ⁇ ( ) ⁇ SU ⁇ d Di Q rt rr LQ 3 LQ SD H LQ ⁇ ⁇ d SD: h- 1 X d IQ ⁇ ⁇ - et rt & ⁇ CD ⁇ - ⁇ ⁇ -
  • the magnetic elements are held in their respective mounting positions by the high magnetic forces.
  • the magnetic elements are arranged in the rotor of the generator.
  • the rotor can be designed as an external rotor.
  • the rotor with the magnetic elements can also be designed as an inner rotor, the armature winding then being located in the stator arranged on the outside.
  • a deflection of the magnetic flux is provided according to the invention in such a way that the receiving pockets are extended in the circumferential direction on both sides beyond the last magnetic element in each case.
  • the permanent magnets are not demagnetized.
  • the receiving pockets for the magnetic elements provided according to the invention result in the possibility of simple mounting of the magnetic elements, which can be positioned almost without force as a result of the magnetic yoke.
  • a magnetic field influencing can be expedient during assembly;
  • a stator is positioned in the interior of the rotor during assembly, which is energized for assembly purposes in such a way that the positioning of the magnetic elements is largely possible without force. This avoids assembly difficulties due to strong repulsive forces between the magnetic elements.
  • Fig. 2 is a view of the stator and the rotor of the
  • Motor-generator unit according to section II-II of Fig. 1, Fig. 3 to Fig. 2 is a partial axial view of the
  • Fig. 4 shows a three-dimensional section of the rotor with permanent magnets
  • Fig. 5 is a view of the voltage regulator
  • the electrical machine forming a power generator shown in FIGS. 1 to 3 relates to a unit consisting of a drive motor and a synchronous generator.
  • the preferred drive motor is a diesel engine, of which only the connection-side end of its crankshaft 1 is shown in broken lines.
  • the air wheel 2 has a blading 4 for generating an air flow according to arrow SI for engine cooling, the air flowing in according to arrow S2 corresponding to the cooling air flowing out of the generator housing 8 after the generator cooling.
  • the generator housing cover (provided on the flow side) has suction openings for the cooling air flowing in according to arrows L. So that this cow air flow in the generator housing 8 achieves its full cooling effect, the protective hood 14 has one or more (not shown) appropriately dimensioned inlet openings for the cow air.
  • a motor-side connection housing 5 encloses the space, in which the air wheel 2 is housed, radially outwards; it is open on both sides and has on its side opposite the motor an annular flange 6 with threaded bores for screwing in fastening screws 7 for connecting the cylindrical generator housing 8, which is expediently made of sheet metal, with which it is flat on both ends. is stretched.
  • the fastening screws 7 are arranged on the inside of the generator housing 8, distributed over its circumference, and span the entire length of the housing.
  • a generator housing cover 9 is provided which has a cover inner ring 10 on radially inwardly projecting spokes, to which the stator 11 of the generator is fastened.
  • stator screws 17 are sufficient for fastening the stator to the inner cover ring 10, which are passed through bores in the laminated core of an outer stator part 19 and via spacer sleeves 20 between the inner cover ring 10 and the facing side of the stator outer part 19 are screwed to the cover ring 10.
  • the stator outer part 19 is fixed in this way to the housing, the laminated core forming the stator outer part 19 being clamped together by the stator screws 17.
  • the laminated core forming an inner stator part 21 is arranged on a hollow shaft 24 in a rotationally fixed manner.
  • the hollow shaft 24 is connected via its end cap 60 to a torsion bar 46 arranged in the shaft axis and inserted with prestress. It is rotatably mounted on bearing bushes 47 in bearing flanges 26 of cladding sheets 22, which are arranged on opposite end faces of the sheet stack.
  • the end of the torsion bar 46 opposite the end cap 60 is fixed to the housing via a bar-fixed support 44.
  • the fastening eye 61 is seated on a screw 62, which clamps the laminated core of the yoke 42 together.
  • the cladding sheets 22 cover a control air gap 23 between the stator inner part 21 and the stator outer part 19.
  • stator inner part 21 Since the laminated core forming the stator inner part 21 is thus seated in a rotationally fixed manner on the hollow shaft 24, it rotates with it for the purpose of the desired constant control of the generator voltage.
  • the adjustment of the inner stator part 21 relative to the outer stator part 19 for the purpose of regulating the voltage of the generator is described in detail below.
  • the view according to FIG. 2 shows - without the insulating plate 25 shown in FIG. 1, which is omitted to improve the view - not only the contour of the laminated core forming the rotor 29, but also that of the laminated core forming the stator, which is in the region of the stator outer part 19 have cutouts 38 for receiving the winding phases of the three-phase winding 28 of the generator.
  • the outer stator part 19 is fastened to the inner cover ring 10 shown in FIG. 1 by means of stator screws 17 guided through bores 39 of its laminated core. According to the chosen cut one also recognizes the spacer sleeves 20, which support the sheet metal packs of the stator outer part 19 against the inner cover ring 10.
  • Three retaining screws 27 serve to center the inner stator part 21 within the outer stator part 19 by means of lateral cladding plates 22, in the bearing flanges 26 of which the hollow shaft 24 with the laminated core of the inner stator part 21 is mounted.
  • the cladding sheets 22 are covered on the outside in the area of the control air gap 23 by an insulating plate 25, which serves for the electrical insulation of the three-phase winding 28 of the generator and three retaining screws 27 distributed around the circumference relative to the cladding sheet 22.
  • the retaining screws 27 run through bores in the laminated core forming the outer stator part 19. They are insulated against the laminated core by means of insulating sleeves and center the inner stator part 21 with respect to the outer stator part 19 via the cladding plates 22.
  • the stator 11 is surrounded by the rotor 29, which is likewise constructed from a laminated core which is clamped together by means of clamping screws 30 which are screwed into corresponding threaded bores in the fan wheel 2 with a threaded end 31 on the motor side. Support sleeves 32 pushed onto the tensioning screws 30 are clamped between the fan wheel and the associated side of the rotor 29.
  • the rotor 29 is thus connected in a rotationally fixed manner to the fan wheel 2. On its inner circumference, it forms a narrow, approximately 2 mm wide air gap 33 with respect to the stator 11.
  • the rotor 29 has approximately Bags 34 running in a linden shape within two pole segments, into which magnetic elements 35 in the form of narrow bar-shaped bars are inserted from both sides, specifically in the present example, as can be seen from FIG. 2, two rows of ten magnetic elements 35 arranged next to each other per pole, which are responsible for the magnetic excitation of the generator.
  • the inner contour line 36 of the circumferential wall 50 of the rotor 29 delimiting the pockets 34 radially inwards, together with the outer contour line 37 of the stator 11, delimits the narrow air gap 33.
  • Bores 40 in the rotor plates serve for the installation of a (not shown) ) Starter.
  • the magnetic elements 35 are inserted axially into the pockets 34, so that they form the two poles in a polygonal distribution, lying closely next to one another.
  • the subdivision of the permanent magnets for the poles into small magnetic elements 35 enables their cost-effective production; their assembly is greatly facilitated by a suitable magnetic yoke 49 because this practically eliminates the mutual repulsion of adjacent magnetic elements 35.
  • the individual magnetic elements 35 can be inserted into the pockets 34 almost without force. A special fastening of the magnetic elements 35 is unnecessary, since these are held in operation by their magnetic forces in the axial direction and are supported in the pockets seen in the radial direction, so that they easily withstand the centrifugal forces that occur during operation.
  • control air gap 23 narrows if, starting from the position shown in dashed lines, the inner stator part 21 is rotated in the clockwise direction according to arrow U (FIG. 2) relative to the outer stator part 19, the end position being reached approximately with a twist path according to the angle w.
  • the control air gap 23 is smallest in this end position.
  • the geometry of the control air gap 23 and thus the magnetic resistance in the stator 11 are changed by rotating the inner stator part 21 with respect to the outer stator part 19.
  • This fact is used in the present permanently excited synchronous machine for voltage regulation.
  • the described change in the magnetic flux makes it possible to regulate the induced voltage, with a direct proportionality between the latter and the magnetic flux.
  • the inner part of the stator 21 is seated on a hollow shaft 24 with a prestressed torsion bar 46, torsional forces counteracting the force of the magnetic field on the inner part of the stator 21 are mobilized, so that the rotation of the inner part of the stator 21 with respect to the outer part 19 of the stator used for the purpose of voltage regulation by means of a rotary magnet 41 takes place almost without power.
  • this presupposes that the torsional preload is adapted to the magnetic restoring force.
  • the rotary magnet 41 shown in FIGS. 1 and 5 is arranged inside a yoke 42 which carries a winding 43 controlled by the generator terminal voltage. Voltage fluctuations in the gen- rator winding to a rotation of the rotary magnet 41 and thus effect the desired constant control of the voltage by a relative rotation between the two stator parts. 1, the rotary magnet 41 is overhung on the associated end of the hollow shaft 24, which in turn is non-rotatably connected to the stator inner part 21. The rotary magnet 41 sits centrally on a bearing section 45 at the end of the hollow shaft 24 and is pressed there against a shoulder of the hollow shaft 24.
  • the rotary magnet 41 with the associated yoke 42 are preferably each made of sheet metal.
  • the electrical circuit for actuating the rotary magnet 41 is still drawn.
  • the winding 43 attached to one of the poles of the yoke 42 is connected to the terminal voltage UI, U2 of the generator winding 28.
  • the magnetic flux is directly proportional to the indicated voltage and controls the rotation of the rotary magnet 41 and, via the hollow shaft 24, also of the stator inner part 21, as a result of which the geometry of the control air gap 23 and thus the magnetic resistance in the stator 11 is changed.
  • the result is a simple regulation of the terminal voltage of the generator independent of the power factor cos ⁇ .

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)
  • Motor Or Generator Frames (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Control Of Eletrric Generators (AREA)
  • Steering Control In Accordance With Driving Conditions (AREA)
  • Control Of Multiple Motors (AREA)

Abstract

La présente invention concerne une unité de production de courant constituée d'un générateur et d'un moteur à combustion interne à piston alternatif servant de système de commande, notamment d'un générateur synchrone et d'un moteur diesel. Selon cette invention, des aimants permanents sont placés dans le rotor du générateur, dans la zone des pôles, afin d'exciter le générateur, et un enroulement d'induit (28) se trouve dans le stator. Des poches de réception (34), au moins ouvertes sur un côté en direction axiale, sont formées dans les zones des pôles du rotor (29) et, avec une paroi périphérique cylindrique (50), sont adjacentes à l'entrefer (33) formé avec le stator (11). Les aimants permanents des zones des pôles sont respectivement constitués de plusieurs éléments magnétiques (35), qui sont situés côte-à-côte dans la direction périphérique, à l'intérieur des poches de réception (34).
PCT/EP2001/002367 2000-03-02 2001-03-02 Unite de production de courant constituee d'un generateur et d'un moteur a combustion interne a piston alternatif servant de systeme de commande WO2001065661A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP01915313A EP1173917B1 (fr) 2000-03-02 2001-03-02 Unite de production de courant constituee d'un generateur et d'un moteur a combustion interne a piston alternatif servant de systeme de commande
JP2001564438A JP2003526310A (ja) 2000-03-02 2001-03-02 電機ならびに駆動機構としての往復ピストン内燃エンジンからなる発電ユニット
DE50109853T DE50109853D1 (de) 2000-03-02 2001-03-02 Stromerzeugereinheit aus generator und hubkolbenverbrennungsmotor als antrieb
US09/937,535 US6710494B2 (en) 2000-03-02 2001-03-02 Power generating installation that comprises a generator and a reciprocating internal combustion engine as drive
AU42444/01A AU779625B2 (en) 2000-03-02 2001-03-02 Power generating installation that comprises a generator and a reciprocating internal combustion engine as drive

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10010248A DE10010248A1 (de) 2000-03-02 2000-03-02 Stromerzeuger als Einheit aus Antriebsmotor und Generator
DE10010248.4 2000-03-02

Publications (1)

Publication Number Publication Date
WO2001065661A1 true WO2001065661A1 (fr) 2001-09-07

Family

ID=7633286

Family Applications (3)

Application Number Title Priority Date Filing Date
PCT/EP2001/002367 WO2001065661A1 (fr) 2000-03-02 2001-03-02 Unite de production de courant constituee d'un generateur et d'un moteur a combustion interne a piston alternatif servant de systeme de commande
PCT/EP2001/002369 WO2001065670A1 (fr) 2000-03-02 2001-03-02 Unite de production de courant constituee d'un moteur de commande et d'un generateur
PCT/EP2001/002368 WO2001065669A1 (fr) 2000-03-02 2001-03-02 Unite de production de courant constituee d'un generateur et d'un moteur a combustion interne a piston alternatif servant de systeme de commande

Family Applications After (2)

Application Number Title Priority Date Filing Date
PCT/EP2001/002369 WO2001065670A1 (fr) 2000-03-02 2001-03-02 Unite de production de courant constituee d'un moteur de commande et d'un generateur
PCT/EP2001/002368 WO2001065669A1 (fr) 2000-03-02 2001-03-02 Unite de production de courant constituee d'un generateur et d'un moteur a combustion interne a piston alternatif servant de systeme de commande

Country Status (11)

Country Link
US (3) US6737775B2 (fr)
EP (3) EP1175723A1 (fr)
JP (3) JP2003526311A (fr)
KR (3) KR100641617B1 (fr)
CN (3) CN1232014C (fr)
AT (2) ATE327588T1 (fr)
AU (3) AU779625B2 (fr)
DE (3) DE10010248A1 (fr)
ES (2) ES2265421T3 (fr)
RU (3) RU2266605C2 (fr)
WO (3) WO2001065661A1 (fr)

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